Photographic printing apparatus and method

Details Photographic printing apparatus and method Photographic printing apparatus and method

1993-10-12

1994-11-29

Gellner, Michael L.

Photocopying

Contact printing

Machine

355 85, 355 91, 355 94, 355 97, G03B 2704

Patent

active

053694686

ABSTRACT:
Automated apparatus and method for exposing lithographic plates to light through films and masks. The method involves placing a plate, film and mask at an exposure station in superposed relation to one another with the film overlying the plate and the mask overlying the film, exposing the plate to light through the mask and film at the exposure station, raising the mask off the film to a raised position, gripping the film and moving it relative to the plate to expose a portion of the plate therebelow, gripping the exposed portion of the plate, gripping the mask in its raised position, moving the film, plate and mask forwardly while so gripped to a discharge station, and releasing the film, plate and mask at the discharge station.

REFERENCES:
patent: 4423955 (1984-01-01), Powers
patent: 4575233 (1986-03-01), Copeland et al.
patent: 4614425 (1986-09-01), Copeland et al.
patent: 4931833 (1990-06-01), Elwing
patent: 4951089 (1990-08-01), Powers

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